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Calculate the temperature above which th...

Calculate the temperature above which the given reaction become spontaneous.
`C_((s)) + H_(2)O_((g)) rarr CO_((g)) + H_(2(g))`
`DeltaH^(@) = + 131.3 KJ//"mole"` ,
`DeltaS^(@) = + 0.1336 KJ//"mole" K`

A

`98.8 K`

B

`709.8^(@)C`

C

`491.4 K`

D

`354.9^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta G = DeltaH - TDeltaS`
`0 = +131.3 - T(+0.1336)`
(for spontaneity)
`T gt (131.3)/(0.1336) = 982.8 K`
`t^(@)C gt 982.8 - 273 = 709 .8^(@)C`
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